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Old 05-27-2012, 01:53 AM   #1
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Shop wiring questions.


Just put in a new 30x40 (pole) shop, and now it is time for wiring. Few questions:

- All wiring must go in the 'rafters' as it is not good (or easy) to drill through 6x8's with a hole big enough for 12, 10 or 8 guage for power. There are horizontal 2x4's bracing the truss 2x6's, and they are put on with just a single nail on each end. I believe it is a code thing, because they are really useless. Can (should) I run my wires on top of these 2x4's?

- Should I reinforce with a vertical 2x4 before hanging a fluorescent light from one of them?

- I will be running 18/2 or 22/2 security wire for magnetic contacts too. For this, I may want to drill a 6x6 or 6x8 because it is a really small hole. What would an inspector say about this?

Thanks,

Todd
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Old 05-27-2012, 10:00 AM   #2
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Shop wiring questions.


You don't have to drill any rafters. Install running boards perpendicular to the rafters on the bottom and staple your cables to the boards. When running parallel you can staple to the sides of the rafters. Just make it nice and neat. The lights can be hung directly from the rafters with no issue either. Have fun and good luck.
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Old 05-27-2012, 10:53 AM   #3
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Shop wiring questions.


Run everything in conduit if you want a cool clean industrial look.
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Old 05-27-2012, 11:46 AM   #4
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Shop wiring questions.


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Run everything in conduit if you want a cool clean industrial look.
And you can use THHN stranded wire which will should be cheaper than Romex.....and it's a lot easier to terminate.
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Old 05-27-2012, 12:30 PM   #5
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And you can use THHN stranded wire which will should be cheaper than Romex.....and it's a lot easier to terminate.
And adding new machines and relocating is much simpler with properly laid out pipelines and jboxes...
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Old 05-27-2012, 02:43 PM   #6
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You don't have to drill any rafters. Install running boards perpendicular to the rafters on the bottom and staple your cables to the boards.
I guess I didn't explain well enough. There are running boards attached to the top of the _bottom_ 2x6 chord on the truss. They are horizontal though, and can't support much weight. They span each truss.

I would have to put wire on the top of these. But b/c they are attached only with a single nail on each end, I need to be sure that would be OK.

Here is a pic.
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Old 05-27-2012, 04:30 PM   #7
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Shop wiring questions.


Looks like a fun time. You setting it up as a shop or just a garage?
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Old 05-27-2012, 09:47 PM   #8
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Looks like a fun time. You setting it up as a shop or just a garage?
It is a shop. I plan to work many hours in this place.

It will have radiant heat, cable TV, ceiling speakers and much more... I need to get the wiring correct though. I contracted out the bulk of the work, but I will do all of the wiring. This includes cat5/6, security, cable, and all power.

This forum is great for help on things like this!

Todd
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Old 05-28-2012, 10:25 AM   #9
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Shop wiring questions.


I agree with the others about conduit looking much better. If you are going to spend much time in there as you say, I would take a look at some existing installations. Look in restaurants with open ceilings and even in Home Depot or Lowes. Costco for some reason has some of the best conduit jobs around. It seems every thing they do is top quality. Impressive to say the least.
So don't just jump into it. Plan it out and get help if you need it.
And yes, it is fine to use those boards up on top of the trusses. They don't look very good though. (overlapping) Even running boards should look good. But I am a licensed master electrician and it must look good or it is hack.
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